Clogging of pipe
Purpose: Measure the time required for the evaporative emission system to reach the target negative pressure by the vacuum pump, and detect the clogging of pipe trouble.
Judge as clogging of pipe malfunction if the evaporative emission system reaches to the target negative pressure within the specified time.
JUDGMENT VALUE
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Time required to reach to the target negative pressure For target vacuum, use one of the followings.
|
≤ 34000 ms | P1451 |
MAP 4
| Time of negative pressure introduction ms | 0 | 100000 | 200000 | 300000 | 400000 | 500000 | 600000 | 700000 | 800000 | 900000 | 1000000 | 1100000 | 1200000 |
| Reference pressure for setting the target negative pressure - Pressure sensor output value kPa (mmHg, inHg) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) | 0.9 (7.058, 0.3) |